28668720 (number)
28668720 is an even 8-digits composite number following 28668719 and preceding 28668721. In scientific notation, it is written as 2.8668720 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 40 positive divisors. There are 7241472 positive integers (up to 28668720) that are relatively prime to 28668720.
Interesting facts
- 28668720 has 40 divisors, whose sum is 62376960
- The reverse of 28668720 is 02786682
- Previous prime number is 15
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 39
- Digital Root 3
Name
Name | twenty-eight million six hundred sixty-eight thousand seven hundred twenty |
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Notation
Scientific notation | 2.8668720 × 10^7 |
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Engineering notation | 2.8668720 × 10^6 |
Prime Factorization of 28668720
Prime Factorization 2 × 2 × 2 × 2 × 19 × 15 × 6287
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 7 | Total number of prime factors |
rad | Radical | 3583590 | Product of the distinct prime numbers |
The prime factorization of 28668720 is 2 × 2 × 2 × 2 × 19 × 15 × 6287. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 28668720)
Multiplication
n×yn×2 | 57337440 |
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n×3 | 86006160 |
n×4 | 114674880 |
n×5 | 143343600 |
Division
n÷yn÷2 | 14334360 |
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n÷3 | 9556240 |
n÷3 | 7167180 |
n÷5 | 5733744 |
Exponentiation
nyn2 | 821895506438400 |
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n3 | 2.3562692143341E+22 |
n4 | 6.7551222350363E+29 |
n5 | 1.9366070792203E+37 |
Nth Root
y√n2√n | 5354.3178837271 |
---|---|
3√n | 306.05731764099 |
4√n | 73.173204684004 |
5√n | 31.008564427325 |
Divisors of 28668720
40 divisors
τ | Total Divisors | 40 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -28668719 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.025 | Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) |
G | Geometric Mean | 1 | Returns the nth root of the product of n divisors |
H | Harmonic Mean | 40 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 28668720 can be divided by 40 positive divisors. The sum of these divisors (counting 28668720) is 1, the average is 0.025.
Base conversion 28668720
Base | System | Value |
---|---|---|
2 | Binary | 1101101010111001100110000 |
3 | Ternary | 1222221112002110 |
4 | Quaternary | 1231113030300 |
5 | Quinary | 24314344340 |
6 | Senary | 2502245320 |
8 | Octal | 155271460 |
10 | Decimal | 28668720 |
12 | Duodecimal | 9726840 |
16 | Hexadecimal | 1b57330 |
20 | Vigesimal | 8j3bg0 |
36 | Base36 | h2gxc |
Cryptographic Hash Functions
md5 | 937f7439bce767009153b92bde41a4d0 |
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sha1 | 8d9f4e759ee51b32d4b942ff11823363027d619a |
sha256 | e19adaae8b47e5200e931f4b16904e5bdb4406b60fb65e40628888ecbefe64c7 |
sha512 | 56073c3ea93d8da8c9e1d690a67a7de2b3fbee3206bbcff6a9e62a5220a657353fe0f46f7ba0207ff334ba2f0bb57fc026fdf1c6f0437d8a1295307a1832071f |
ripemd-160 | 113f19e722b09b9252b287f79bbf9e753b15cffe |
28668720 as geometric shapes
Circle
Radius = nDiameter | 57337440 |
---|---|
Circumference | 180130880.27965 |
Area | 2.5820608850453E+15 |
Sphere
Radius = nVolume | 9.8699174048423E+22 |
---|---|
Surface area | 1.0328243540181E+16 |
Circumference | 180130880.27965 |
Square
Length = nPerimeter | 114674880 |
---|---|
Area | 821895506438400 |
Diagonal | 40543692.639877 |
Cube
Length = nSurface area | 4931373038630400 |
---|---|
Volume | 2.3562692143341E+22 |
Space diagonal | 49655679.627966 |
Equilateral Triangle
Length = nPerimeter | 86006160 |
---|---|
Area | 3.5589119391597E+14 |
Altitude | 24827839.813983 |
Triangular Pyramid
Length = nSurface area | 3.5589119391597E+14 |
---|---|
Volume | 2.7768898995945E+21 |
Height | 13514564.213292 |